[Bf-committers] Subsurf modeling in CAD

[Campbell Barton]

Ayam (opensource), added subdivision nurbs
 http://ayam.sourceforge.net/news.html

The paper
 http://www.cl.cam.ac.uk/~tc270/subdnurbs.html - video on their page

Not sure how this compares to the method used in the Catia video.

On Tue, Nov 11, 2008 at 7:12 PM, joe <joeedh at gmail.com> wrote:
> This sounds like the idea of generating a set of NURBS or bicubic patches
> from a polygon mesh to me.  It's sounds like a cool idea, though our NURBS
> don't support patches, of course.
>
> Joe
>
> On Tue, Nov 11, 2008 at 3:24 AM, Ton Roosendaal <ton at blender.org> wrote:
>>
>> Hi devs,
>>
>> Below is a text I got from Claas Kuhnen, teacher Industrial Design in
>> Michigan. I knew subsurf modeling would be discovered once as superior
>> to Nurbs! :)
>>
>> What we probably need is to get good conversion code for Subsurf ->
>> Nurbs and back. Anyone?
>>
>> -------------------
>>
>> I recently saw that Catia from Dassault system incoporated Subdivision
>> Surfaces into their workflow. It is fully treated as a parametric
>> system, so NURBS surfaces are created on the fly based on the polygon
>> mesh and the result can be trimed and further worked on.
>> Some years ago AmapiPro 7.5 had NURBS subsurface smoothing included
>> instead
>> of only Catmull Clark.
>>
>> Here are some Catia movies showing you the integration.
>>
>> http://www.youtube.com/watch?v=uHfAR97mCY8
>> http://www.youtube.com/watch?v=RwOuaNvpPLI
>>
>> I thought you might know that this type of modeling is now finally
>> becoming the hot topic at Industrial Design. Catia is around 30.000
>> dollars and I assume that they have serious reasons for including it.
>>
>> ---------------------
>>
>> -Ton-
>>
>> ------------------------------------------------------------------------
>> Ton Roosendaal  Blender Foundation   ton at blender.org    www.blender.org
>> Blender Institute BV  Entrepotdok 57A  1018AD Amsterdam The Netherlands
>>
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>
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-- 
- Campbell